Improvement in seingle-maohines



PATRICK H. LAWLER, OF'ROGHESTER, NEW YORK.

Leners Patent No. 76,782, data-z Apre 14, 186e.

IMPROVEMENT IN SHINGLB-MAGHINS.

ma Srlgehnls referat .tu in these tettets ntent :an making gmt nf 'tige snm.

T O ALL WHOM IT MAY OONCER'N:

' Beit known that I, PATRICK H. LAWLER, of the city of Rochester', in the county of Monroe, in the State of New York, have invented an Improved Device for Operating-the Table in Shingle-llIachines, so as' to obtain the taper ou the shingle.

The'nature of this invention consistsin operating the table by means of a latch attached to theV swingcarriage, operating on a starrwheelin connection with a spur-wlieeland pinion and crank wor-kingin a slotted piece of iron bolted to the table lto give it proper throw,.and to force it up and clown if itlgetsfastenedby saw dust or splinters.; and I hereby declare the followingto be a full and accurate description of the same, reference being had to the accompanying drawings, vmaking part of the specifications, and to the letters oi' reference marked thereon, same letters referring to like parts in all the gures. I

Figure 1 is an end view of a shingle-machine, .ivithpart of improvement shown.

Figure 2 isa top view of the same, showing the top view of the same.

Figure 3 is aosectional view'through the shaft S,.at the red line shown in iig. 2. Y

To enable others skilled in the art to make and use my invention, I n'ill proceed to describeits construction and operation. 7

I cons tructmy shingle-machine in any of the known forms where a horizontal saw 'is used, and'on'th'e car. riage or swing for holding the block, I put a pawl, I, arranged in such a manner that it will operatel the s.ix -armed wheel K, on the shaft E, as it moves back from the saw after cutting off the shingle from thebloc'k.; rI also put on the shaft E, a gear-wheel, W, which meshes in .the pinion P on the shafts, thereby giving motion to said shaft S. As it is necessary to give proper/throwto thetablc, so as' tov make' the butts and points-ofthe shingle 'the right thickness, I make the pinion P one-third the size of the wheel W, sothat as the '.theel W is moved one-sixth around, the shaft S is moved one-half. l i

The shaft S runs in a sleeve, and on the inner end has a head, having a slot across its face fora pin, C, (forming with said head a crank,) that is held at anyrrequired position by a jamb-nut, t'o alternthe length ofthe crank to -giveany required throv.' to the table, thereby giving .a suitabletaper to the shingle; Ihe said pin worksin a slotted piece of iron, N, bolted on the table T whichis'rnade adjustable by a slot'shownn 'g. 3, in

which the screw G passes, so that it can be altered to make diterent thickness of'shingles.

The operation of this device `is such that if the table gets fastened by saw-dust or 'splinter-s, itis necessary to have the crank'work in a slot in the piece ot`iron, N,'fus'tcned tothe table, so that it will force the table down as well as up. When a cam is used, it'only worksiagainst the end ofthe piece N. {I hisvn'ill raise up the table, but will not force it down if it gets obstructed; and-in using u crank for this pur-pose, I find it necessary to put inthe gear-wheel W and'pinion P so as to'turn the crank half around, to give the proper throvi to the table.

What I claim as my invention, and desire to secure by LettersPatent, is-'- The arrangement of the pawl I, star-wheel K, spur-wheel W, pinion P,l and its shaft S, in combination with the crank, C, er its equivalent, and slotted pie-ce N, operating substantially for the purposes and in the manner herein described. v

i P. H.' i LAWLE'R.

Witnesses JAS LORENZO GAGE, OWEN REDMOND. 

